CVE-2025-4577 MEDIUM

CVE-2025-4577: Smash Balloon Custom Facebook Feed <= 4.3.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via `data-color` Attribute

Vendor Smub
Product Smash Balloon Social Post Feed – Simple Social Feeds for WordPress
Weakness CWE-79 · XSS
Published June 10, 2025
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The Smash Balloon Social Post Feed – Simple Social Feeds for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the data-color attribute in all versions up to, and including, 4.3.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Key dates

02Disclosure timeline

June 10, 2025 CVE published
April 8, 2026 Record updated